Ephemeris time
The term ephemeris time (often abbreviated ET) can in principle refer to time in association with any ephemeris (itinerary of the trajectory of an astronomical object). In practice it has been used more specifically to refer to: Most of the following sections relate to the ephemeris time of the 1952 standard. The ephemeris time of the 1952 standard leaves a continuing legacy, through its ephemeris second which became closely duplicated in the length of the current standard SI second (see below: ).
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1908 in science1912 in science1972Astronomical constantAtomic clockBarycentric Coordinate TimeBarycentric Dynamical TimeCaesium standardClockCoordinated Universal TimeDUT1Dynamical time scaleEarth's rotationEphemerisEphemeris SecondEphemeris TimeEphemeris dayEphemeris secondEpoch (astronomy)Ernest William BrownFundamental ephemerisGeocentric Coordinate TimeHistory of timekeeping devicesInternational Atomic TimeInternational System of UnitsJet Propulsion Laboratory Development EphemerisJulian dayLight-yearList of cyclesLouis EssenLunar monthLunar theoryNewcomb's Tables of the SunPSR B1937+21PulsarRaphael's EphemerisRichard DunthorneRotation periodSecond
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Ephemeris time
The term ephemeris time (often abbreviated ET) can in principle refer to time in association with any ephemeris (itinerary of the trajectory of an astronomical object). In practice it has been used more specifically to refer to: Most of the following sections relate to the ephemeris time of the 1952 standard. The ephemeris time of the 1952 standard leaves a continuing legacy, through its ephemeris second which became closely duplicated in the length of the current standard SI second (see below: ).
has abstract
Czas efemeryd (ET) jest wyznac ...... taki sam jak czas uniwersalny.
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Die Zeitskala der Ephemeridenz ...... bgelöst, der heutigen Sekunde.
@de
Efemeridtidsskalan ET (från en ...... de sig också vara noggrannare.
@sv
El temps d'efemèrides és una f ...... stre és altament imprevisible.
@ca
El tiempo de efemérides es una ...... predecibles.
* Datos: Q908676
@es
Il tempo effemeride (TE) detto ...... essere assunta come costante.
@it
Le temps des éphémérides (TE) ...... n actuelle : mieux que 10−13).
@fr
The term ephemeris time (often ...... ndard SI second (see below: ).
@en
Tomhas bunúsach ama a úsáidead ...... dinimiciúil ina ionad i 1984.
@ga
Waktu Ephemeris (Ephemeris Tim ...... an panjang detik TDB atau TDT.
@in
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Czas efemeryd (ET) jest wyznac ...... taki sam jak czas uniwersalny.
@pl
Die Zeitskala der Ephemeridenz ...... bgelöst, der heutigen Sekunde.
@de
Efemeridtidsskalan ET (från en ...... er, var 2010 skillnaden ET - U
@sv
El temps d'efemèrides és una f ...... a una diferència de 62 segons.
@ca
El tiempo de efemérides es una ...... 62 segundos.
* Datos: Q908676
@es
Il tempo effemeride (TE) detto ...... tempo terrestre (TT) nel 1991.
@it
Le temps des éphémérides (TE) ...... ente, le temps universel (UT).
@fr
The term ephemeris time (often ...... ndard SI second (see below: ).
@en
Tomhas bunúsach ama a úsáidead ...... dinimiciúil ina ionad i 1984.
@ga
Waktu Ephemeris (Ephemeris Tim ...... tahun 1960 hingga tahun 1983.
@in
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Am eifimirise
@ga
Czas efemeryd
@pl
Efemeridtidsskalan
@sv
Ephemeridenzeit
@de
Ephemeris time
@en
Tempo effemeride
@it
Temps d'efemèrides
@ca
Temps des éphémérides
@fr
Tiempo de efemérides
@es
Waktu Efemeris
@in